Find cheap flights from the United States to London

Find cheap flights from the United States to London

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Good to know

Low season

November Best time to beat the crowds (5% less expensive on average)

High season

June Most popular time to fly (23% more expensive on average)

Average price of a return ticket

£597 (avg. price over the last 2 weeks)

Good deal for a return ticket

£351 or less

Top tips for finding cheap flights to London

  • Looking for cheap airfare to London? 25% of our users found return tickets to London for the following prices or less: From New York £278
  • Book at least 4 weeks before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly to London is September.
  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest London flight deals.
  • Flights to London can land you in any number of airports serving the greater London area. Six international airports service London and, in terms of number of passengers served, they rank as follows: Heathrow Airport, Gatwick Airport, London Stansted Airport, Luton Airport, London City Airport and London Southend Airport. Lucky travelers flying to London have a plethora of options.
  • Perhaps the most popular airport, Heathrow easily connects to the London Underground and can be reached via the Piccadilly Line. Travel time should be under an hour and a single-way fare will be upwards of six pounds (around USD $8.00). Heathrow has three separate stations on the London Underground: one for terminals 2 and 3 and one each for terminals 4 and 5.
  • The Rest and Relaxation Room in Terminal 3 of Heathrow Airport is perfect for travelers stuck with a long layover. Snack machines, sofas, and lounge chairs will tide the weary traveler over until boarding time in this free and oft-visited lounge. For travelers willing to pay for premium service, there are a variety of other lounges that offer private rooms, showers, and fully equipped bars.
  • Landing in Gatwick Airport? There are several popular ways to reach the city from the airport. Trains run to London Bridge and Victoria, and many locations around the city are reachable by London Blackfriars. As if that weren’t enough, coaches and shuttle buses offer service to a number of other locations across the city.
  • If duty-free shopping is one of the perks of traveling for you, then Heathrow is definitely the airport to head to. Not only do they have an extensive range of luxury stores and products, but pre-ordering purchases a day in advance also saves you time, as it allows you to skip the lines. Heathrow Reward members earn points with every purchase as well. These points can later be redeemed for miles and many other perks.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs - booking London flights

What is the cheapest flight to London?

Which airlines fly to London?

Which London airport is closest to central London?

Which London airport offers good services for families traveling with children?

What services are there for business travelers in Heathrow?

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Are there good restaurants in Heathrow?

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Top airlines flying from the United States to London

Scores according to KAYAK customer reviews

7.4
Aer Lingus
Overall score based on 6,062 reviews
7.6
Boarding
7.3
Comfort
8.0
Crew
7.1
Entertainment
6.9
Food
Airline reviews
Read more about Aer Lingus

Book cheap flights from United States to London (return)

Airports
Origin
San Francisco
£246
only
£246
New York
£254
only
£254
£254
only
£254
Los Angeles
£453
only
£453
Dallas
£492
only
£492
Boston
£267
only
£267
Destination
London
£246
only
£246
£254
only
£254
Sun, 27 Sep
SFO
San Francisco Airport
LHR
London Heathrow Airport
17h 15m
Wed, 7 Oct
LHR
London Heathrow Airport
SFO
San Francisco Airport
16h 40m
£246
Trip: 11 days
Based on null reviews
Mon, 12 Oct
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
10h 40m
Thu, 22 Oct
LGW
London Gatwick Airport
JFK
New York John F Kennedy Airport
11h 05m
£254
Trip: 11 days
Based on null reviews
Tue, 24 Nov
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
12h 45m
Sun, 29 Nov
LGW
London Gatwick Airport
JFK
New York John F Kennedy Airport
8h 10m
£262
Trip: 6 days
Based on null reviews
Wed, 11 Nov
LAX
Los Angeles Airport
LHR
London Heathrow Airport
13h 45m
Wed, 18 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
15h 30m
£453
Trip: 8 days
Based on null reviews
Wed, 11 Nov
LAX
Los Angeles Airport
LHR
London Heathrow Airport
13h 55m
Wed, 18 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
13h 25m
£456
Trip: 8 days
Based on null reviews
Wed, 18 Nov
LAX
Los Angeles Airport
LHR
London Heathrow Airport
14h 55m
Wed, 25 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
11h 10m
£469
Trip: 8 days
Based on null reviews
Tue, 20 Oct
LAX
Los Angeles Airport
LHR
London Heathrow Airport
19h 35m
Wed, 4 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
18h 15m
£472
Trip: 16 days
Based on null reviews
Sun, 1 Nov
LAX
Los Angeles Airport
LHR
London Heathrow Airport
10h 30m
Tue, 10 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
11h 10m
£476
Trip: 10 days
Based on null reviews
Sun, 1 Nov
LAX
Los Angeles Airport
LHR
London Heathrow Airport
14h 30m
Tue, 10 Nov
LHR
London Heathrow Airport
LAX
Los Angeles Airport
15h 30m
£479
Trip: 10 days
Based on null reviews
Tue, 20 Oct
DFW
Dallas/Fort Worth Airport
LHR
London Heathrow Airport
14h 45m
Tue, 3 Nov
LHR
London Heathrow Airport
DFW
Dallas/Fort Worth Airport
10h 30m
£492
Trip: 15 days
Based on null reviews
Mon, 14 Sep
DFW
Dallas/Fort Worth Airport
LHR
London Heathrow Airport
9h 05m
Mon, 21 Sep
LHR
London Heathrow Airport
DFW
Dallas/Fort Worth Airport
30h 50m
£495
Trip: 8 days
Based on null reviews
Mon, 12 Oct
EWR
Newark Liberty Airport
LGW
London Gatwick Airport
10h 35m
Thu, 22 Oct
LGW
London Gatwick Airport
EWR
Newark Liberty Airport
11h 05m
£254
Trip: 11 days
Based on null reviews
Wed, 4 Nov
DFW
Dallas/Fort Worth Airport
LHR
London Heathrow Airport
23h 45m
Tue, 10 Nov
LHR
London Heathrow Airport
DFW
Dallas/Fort Worth Airport
15h 38m
£508
Trip: 7 days
Based on null reviews
Sun, 13 Sep
DFW
Dallas/Fort Worth Airport
LHR
London Heathrow Airport
9h 05m
Tue, 22 Sep
LHR
London Heathrow Airport
DFW
Dallas/Fort Worth Airport
10h 30m
£511
Trip: 10 days
Based on null reviews
Thu, 10 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
13h 45m
Thu, 24 Sep
LHR
London Heathrow Airport
EWR
Newark Liberty Airport
14h 15m
£259
Trip: 15 days
Based on null reviews
Sun, 13 Sep
DFW
Dallas/Fort Worth Airport
LHR
London Heathrow Airport
8h 55m
Wed, 23 Sep
LHR
London Heathrow Airport
DFW
Dallas/Fort Worth Airport
14h 15m
£520
Trip: 11 days
Based on null reviews
Tue, 24 Nov
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
12h 45m
Tue, 8 Dec
LGW
London Gatwick Airport
JFK
New York John F Kennedy Airport
8h 20m
£266
Trip: 15 days
Based on null reviews
Wed, 4 Nov
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
10h 20m
Fri, 11 Dec
LGW
London Gatwick Airport
JFK
New York John F Kennedy Airport
11h 30m
£254
Trip: 38 days
Based on null reviews
Tue, 1 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
11h 20m
Wed, 16 Sep
LHR
London Heathrow Airport
EWR
Newark Liberty Airport
14h 15m
£260
Trip: 16 days
Based on null reviews
Mon, 9 Nov
BOS
Boston Logan Airport
LHR
London Heathrow Airport
17h 45m
Mon, 16 Nov
LHR
London Heathrow Airport
BOS
Boston Logan Airport
30h 30m
£267
Trip: 8 days
Based on null reviews

Book cheap flights from United States to London (one-way)

Airports
Origin
San Francisco
£289
only
£289
New York
£165
only
£165
£82
only
£82
Boston
£154
only
£154
Destination
London
£82
only
£82
£88
only
£88
£126
only
£126
Sat, 5 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
11h 20m
Based on null reviews
Mon, 14 Sep
EWR
Newark Liberty Airport
STN
London Stansted Airport
16h 20m
£126
Based on null reviews
Mon, 29 Jun
BOS
Boston Logan Airport
LHR
London Heathrow Airport
12h 25m
£154
Based on null reviews
Tue, 30 Jun
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
7h 00m
£165
Based on null reviews
Tue, 8 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
13h 55m
Based on null reviews
Tue, 21 Jul
BOS
Boston Logan Airport
LHR
London Heathrow Airport
11h 00m
£187
Based on null reviews
Sat, 5 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
18h 00m
Based on null reviews
Mon, 13 Jul
JFK
New York John F Kennedy Airport
LHR
London Heathrow Airport
10h 20m
£198
Based on null reviews
Sun, 19 Jul
BOS
Boston Logan Airport
LHR
London Heathrow Airport
14h 30m
£205
Based on null reviews
Sat, 5 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
13h 45m
Based on null reviews
Sun, 16 Aug
JFK
New York John F Kennedy Airport
LHR
London Heathrow Airport
16h 20m
£234
Based on null reviews
Tue, 8 Sep
EWR
Newark Liberty Airport
LGW
London Gatwick Airport
33h 05m
Based on null reviews
Wed, 16 Sep
EWR
Newark Liberty Airport
STN
London Stansted Airport
51h 20m
£128
Based on null reviews
Tue, 15 Sep
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
18h 00m
Based on null reviews
Tue, 21 Jul
JFK
New York John F Kennedy Airport
LGW
London Gatwick Airport
13h 20m
£262
Based on null reviews
Mon, 27 Jul
JFK
New York John F Kennedy Airport
LHR
London Heathrow Airport
7h 11m
£265
Based on null reviews
Mon, 17 Aug
JFK
New York John F Kennedy Airport
LHR
London Heathrow Airport
10h 57m
£267
Based on null reviews
Thu, 3 Sep
SFO
San Francisco Airport
LHR
London Heathrow Airport
10h 25m
£289
Based on null reviews
Tue, 1 Sep
EWR
Newark Liberty Airport
STN
London Stansted Airport
37h 40m
£134
Based on null reviews
Mon, 24 Aug
EWR
Newark Liberty Airport
LHR
London Heathrow Airport
11h 40m
£156
Based on null reviews
*
Prices are per person, are for e–tickets and include all taxes & fees in GBP.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller
At KAYAK we don’t set prices, so it’s not possible for us to guarantee what other companies are selling.

We aggregate tons of data for you
Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we don't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car hires can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find on occasion that certain prices are no longer available.

More questions or if you have a bad price to report to us
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